December Weather in St Helens, Australia

Last updated: February 26, 2025

December in St Helens, Australia offers a mild coastal climate, with maximum temperatures reaching 24°C (76°F) and an average of 15°C (60°F). This month experiences a minimum temperature of 8°C (47°F), making it a comfortable time for outdoor activities. However, with 94 mm (3.7 in) of rainfall spread across 11 days, visitors should be prepared for occasional showers. The humidity levels are relatively high at 76%, contributing to a refreshing yet humid atmosphere along the scenic coast. Whether you’re exploring the beaches or enjoying local attractions, December presents a blend of warm days and lush surroundings in St Helens.

December Temperature in St Helens

In St Helens, Australia, December marks a delightful transition into the summer season, with temperatures reflecting a warming trend. The month kick-starts with a minimum temperature of 8°C (47°F), gradually rising to a comfortable average of 15°C (60°F), and peaking at a pleasant 24°C (76°F). Compared to the cooler months, December brings a noticeable increase in warmth, inviting locals and visitors alike to enjoy outdoor activities and the region's stunning natural beauty. As the year draws to a close, the milder climate in St Helens provides a perfect backdrop for summer adventures, from beach outings to exploring lush landscapes.

December Weather in St Helens: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in St Helens, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec636262585552505051545659
Data source: Temperature data for St Helens generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in St Helens

In December, St Helens, Australia, experiences its wettest month of the year with a striking 94 mm (3.7 in) of precipitation over approximately 11 rainy days. This marks a notable increase from the previous months, particularly when compared to November's 58 mm (2.3 in) of rainfall. Following the October peak of 89 mm, December solidifies the trend of heightened moisture during the late spring and early summer months. The uptick in precipitation not only hints at summer storms but also provides much-needed hydration for the region's lush landscapes, fostering a vibrant ecosystem that thrives on this seasonal bounty.

December Precipitation Trends in St Helens

The chart displays monthly precipitation patterns in St Helens, with values for each month alongside December's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec587681394659404957895894
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in St Helens

In St Helens, Australia, the humidity levels show a consistent trend throughout the year, oscillating between 74% and 79%. As December rolls in, the humidity settles at 76%, reflecting a pattern of moderate moisture that has been characteristic of the preceding months. Notably, July marks the peak with 79%, while the more temperate months of February and October dip slightly to 74%. Overall, the data suggests a relatively stable humidity climate, making St Helens a comfortable destination, especially as the year winds down with a December that maintains the average of its annual trends.

December Average Humidity in St Helens

This chart illustrates the average monthly humidity levels in St Helens, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec76%74%76%75%78%77%79%79%77%75%76%77%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in St Helens

In December, St Helens, Australia, experiences one of its highest UV Index levels, peaking at 13, classified as extreme. This trend mirrors the previous month's index, highlighting a consistent pattern of intensified sun exposure during the Australian summer. With a burn time of just 10 minutes, the importance of sun safety cannot be overstated. As the year draws to a close, residents and visitors alike should remain vigilant to protect their skin from harmful UV rays. Observing the annual UV cycle, we can see a gradual decline in UV intensity from the peak summer months, with lower values in mid-winter. For more detailed information, check out the St Helens UV Index.

Maximum UV Index Levels in St Helens for December

The chart shows the monthly maximum UV Index (UVI) for St Helens in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec1311964224681113
Data source: St Helens December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

December Sunshine in St Helens

December shines brightly in St Helens, Australia, offering an impressive 359 hours of sunshine. This month stands out as the sunniest of the year, following a gradual ascent from 330 hours in November. As summer approaches, the trend of increasing daylight becomes evident, with sunlight peaking after a series of months that witness a notable decline from April’s 252 hours to June’s low of 198 hours. The sunshine hours consistently rebound through spring and into summer, showcasing the region's vibrant and welcoming climate. With December's abundant sunshine, St Helens invites visitors to bask in its radiant beauty, making it the perfect time to explore the stunning landscapes and enjoy outdoor activities.

Monthly Sunshine Duration in St Helens: December Highlighted

The December sunshine duration represents the total number of hours St Helens experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec294h292h293h252h225h198h223h247h276h305h330h359h
Data source: St Helens December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in St Helens During December

As December approaches in St Helens, Australia, the likelihood of sunny weather shows an encouraging trend, with a 48% chance of sunshine. This figure is a noticeable step up from the dreary winter months, particularly in June, which only sees a 36% chance of sun. The pattern highlights a gradual increase in daylight as the year closes, peaking in April, the sunniest month, at 64%. While December's chances of clear skies are still lower than the vibrant summer months like January and February, this moderate likelihood offers a glimmer of hope for sun-seekers amid the festive season.

Percentage of Sunny Days in December in St Helens

The chart illustrates the percentage of sunny days in St Helens throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often St Helens experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec35%41%40%64%50%36%44%45%52%38%37%48%
Data source: St Helens December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in St Helens in December

In St Helens, Australia, December marks a peak in daylight duration, offering an impressive 15 hours of sunlight. This substantial increase follows a gradual progression from the shorter days of winter, where June, July, and August all see just 9 hours of daylight. As the year unfolds, sunlight begins to brighten, reaching 10 hours in August, and further climbing to 14 hours by November. The transition from the harsh winter months to the longer, sun-drenched days of summer creates an inviting atmosphere, encouraging outdoor activities and exploration in this picturesque coastal town. December's extended daylight not only highlights the seasonal change but also sets the stage for a vibrant summer ahead.

Average Daylight Hours in St Helens for December

The chart illustrates the variation in daylight duration in St Helens throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 45m13h 40m12h 19m10h 56m9h 47m9h 13m9h 30m10h 30m11h 48m13h 11m14h 25m15h 5m
Data source: St Helens daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in St Helens

In December, St Helens experiences an average wind speed of 6.3 m/s (14 mph), maintaining a pleasant breeze as the year draws to a close. This increase from the quieter winds of November reflects a trend of rising wind speeds during the warmer months, with August peaking at a lively 6.9 m/s (15 mph). Throughout the year, wind speeds generally hover between 5.4 m/s to 6.9 m/s, indicating a moderate yet dynamic climatic environment. As the final month of the year transitions into the summer, December's winds not only add a refreshing touch to the coastal landscape but also set the stage for the spirited breezes that characterize the region moving forward.

Average December Wind Speed in St Helens

The chart displays monthly wind speed patterns in St Helens, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.75.95.86.06.05.56.06.96.76.35.46.3 m/s
Data source: St Helens December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in St Helens Compares to Other Months

The weather in St Helens changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in St Helens and find detailed weather information for every month.

In comparing the weather of December and January, January tends to be slightly warmer with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 27°C (81°F), compared to December's 8°C (47°F) to 24°C (76°F). Additionally, January experiences less precipitation at 58 mm (2.3 in) over 7 days, whereas December sees higher rainfall of 94 mm (3.7 in) across 11 days. Both months maintain a consistent humidity level of 76%, ensuring that the air remains relatively moist throughout the summer period. For more detailed information, visit St Helens weather in January.

December and February offer mild weather conditions, but February tends to be slightly warmer than December. In December, temperatures range from a minimum of 8°C (47°F) to a maximum of 24°C (76°F), with an average of 15°C (60°F). February sees a minimum temperature of 10°C (50°F) and a maximum of 25°C (78°F), averaging around 17°C (62°F). Both months experience about 11 days of precipitation, but December has higher rainfall, totaling 94 mm (3.7 in) compared to February's 76 mm (3.0 in). Additionally, humidity levels are comparable, with December at 76% and February slightly lower at 74%. For more detailed insights, you can explore St Helens weather in February.

In December, the weather is characterized by slightly warmer temperatures, with a minimum of 8°C (47°F) and an average of 15°C (60°F), peaking at a maximum of 24°C (76°F). The month experiences moderate precipitation of 94 mm (3.7 in) over 11 days, maintaining a consistent humidity level of 76%. In contrast, March sees a slight increase in minimum temperature to 10°C (50°F) and a marginally higher average of 16°C (62°F), but the maximum drops to 23°C (74°F). Precipitation decreases to 81 mm (3.2 in) over 10 days, with humidity remaining unchanged at 76%. For more detailed insights into the weather during this month, you can check St Helens weather in March.

In December, the weather is generally warmer, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 24°C (76°F), and an average temperature of 15°C (60°F). Additionally, December experiences higher precipitation, with a total of 94 mm (3.7 in) over 11 days, resulting in a humidity level of 76%. In contrast, April sees slightly cooler temperatures, with a maximum of 22°C (71°F) and an average of 15°C (58°F). This month has significantly less rainfall, accumulating only 38 mm (1.5 in) over 5 days, while maintaining a comparable humidity level of 75%. For more detailed information, you can check St Helens weather in April.

In December, the weather in St Helens is typically warmer, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 24°C (76°F) and an average of 15°C (60°F). This month also sees higher precipitation, with around 94 mm (3.7 in) spread over 11 days, contributing to a humidity level of 76%. In contrast, May experiences cooler temperatures, averaging at 13°C (55°F), with a lower maximum of 19°C (66°F) and a minimum of 7°C (45°F). Additionally, May has markedly less rainfall, totaling 45 mm (1.8 in) across just 7 days, and a slightly higher humidity of 78%. For more details on the May climate, you can visit St Helens weather in May.

When comparing the weather in December and June, it's clear that December tends to be warmer and wetter. December boasts an average temperature of 15°C (60°F) with highs reaching up to 24°C (76°F), while June averages only 11°C (52°F) with a maximum of 15°C (60°F). Additionally, December experiences more rainfall, with 94 mm (3.7 in) over 11 days compared to June's 59 mm (2.3 in) over just 8 days. Interestingly, humidity levels are relatively consistent, with December at 76% and June slightly higher at 77%. For more specific insights about June weather, you can visit St Helens weather in June.

In December, the weather in St Helens is generally warmer, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 24°C (76°F). In contrast, July tends to be cooler, with temperatures averaging between 6°C (43°F) and 14°C (58°F). December experiences more rainfall, with 94 mm (3.7 in) over approximately 11 days, while July sees only 40 mm (1.6 in) across 9 days. Humidity levels are quite close, with December at 76% and July slightly higher at 79%. For more details about the weather in July, check out St Helens weather in July.

When comparing the weather in December and August, December typically enjoys milder temperatures, with a minimum of 8°C and an average of 15°C, peaking at 24°C. In contrast, August experiences cooler temperatures, ranging from a minimum of 5°C to an average of 10°C, with a maximum of only 15°C. Precipitation levels are higher in December, totaling 94 mm over 11 days, compared to August's 49 mm across 9 days. Humidity remains relatively consistent, with December at 76% and August slightly higher at 78%. For more specific details, you can refer to this link: St Helens weather in August.

In comparing the weather between December and September, we see notable differences in temperature and precipitation. December showcases a warmer climate with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 24°C (76°F), averaging around 15°C (60°F). In contrast, September is cooler, with temperatures stretching from 5°C (41°F) to 17°C (62°F), and an average temperature of 11°C (52°F). Additionally, December experiences higher precipitation, with 94 mm (3.7 in) over 11 days, compared to September's 57 mm (2.3 in) over 9 days. Both months exhibit similar humidity levels, hovering around 76% and 77%. For further insights into September weather specifics, refer to St Helens weather in September.

When comparing the weather in December to that of October, we notice a notable increase in overall temperatures. December features a minimum of 8°C (47°F) and an average of 15°C (60°F), while October has slightly cooler temperatures with a minimum of 7°C (45°F) and an average of 12°C (54°F). The maximum temperature in December reaches 24°C (76°F), surpassing October's high of 19°C (66°F). Additionally, both months experience similar levels of precipitation, with December receiving 94 mm (3.7 in) over 11 days compared to October's 89 mm (3.5 in) across 13 days. Humidity levels are quite comparable as well, with December at 76% and October at 75%. For more detailed insights on October weather, check St Helens weather in October.

In comparing the weather of December and November, December tends to be slightly warmer, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 24°C (76°F), compared to November’s range of 7°C (44°F) to 22°C (71°F). December also sees more precipitation, accumulating 94 mm (3.7 in) over 11 days, while November has lower totals of 58 mm (2.3 in) over 10 days. Despite the increase in rainfall, both months share the same humidity level of 76%. For a more detailed look into November's weather patterns, you can refer to St Helens weather in November.

Compare St Helens's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in St Helens

As December unfolds in St Helens, it heralds the arrival of warmer temperatures and a noticeable shift from the cooler months. This lively transition is characterized by higher averages and the occasional warm day, making it a popular time for outdoor activities. However, this month also brings a fair amount of rainfall, with nearly half of December experiencing wet days, leading to a humid atmosphere that contrasts sharply with the drier winter months. For those planning a visit, be prepared for the dynamic weather by checking out the full details at St Helens Climate to make the most of your experience.